Freight-car truck



May 15, 1928.

J. J TA1-UM "'FREGHT- CAR TRUCK 5 Sheets-Sheet Filed May l, 1924 IPT R. m M,

TT'oRNEY.

Jil

J. J. TATUM FREIGHT CAR TRUCK May 15, 192s. 1,670,054

4Filed May 1, 1924 3 sheets-sheet 2 M yf: Z INVENTOR.

ATTORNEY.

May l5, 1928.

INVENTOR.

Paamtealv May 15, 192s.

iroHN J. TATUM, or Bmtrrmtortn;y MARYLAND.

FREIGHT-CAR TRUCK.

Application filed May 1, 1924. Serial No. 710,399.

The object of myinvention is to provide a freight car truck, the construction of which is such .that it is'not necessary to use provide for an assembly of M. C. B. journal 1 boxes on the ends of the arch bars in such mannerthat the box may be removed, or replaced in any shop, or on .any shop track Without scrapping or damaging the arch bars or truck side frames.

A further object of my invention is to make possible the designing of a. truck meeting M. C. B. standard requirements, by the use of 'M. C. B. standard parts, built within M. C. B. standard dimensions, and to meet M. C. B. standard third rail clearances.

A further objectkof my invention is to provide a pivotal connection between the two truck side frames so as to provide flexibility for the "truck whereby theV truck can automatically adjust itself in position to curves in' the track, making its movement more free and easier in curves than can be had if .the side frames were rigidly connected.l Such flexibility reduces grinding of the wheel flange against. the rail, providing against friction, thereby. reducing train resistance, track wear and A Wheel flange wear.

A further object of my i-nvention is to design a' connection between the outerends of the` arch bars which providesl resistance against the outward movement ofthe ends of the top arch bar from the load brought upon it; v v A further object of my invention is to desi-gnfa truck to eliminate brake beamhangers thereby lessening the number of pieces to be made use of and to be worn out in service and `insuring safety against accidents; also eliminating the carrying ofthe load on the truck springs by rivets; and with t-hese and other objects inview, my invention consists of 'the'parts -and combination of parts as' will be hereinafter more fully set forth.

In the drawings: Y Figure 1 is a side'elevation of a freight car truck embodying my invention. y

Figure' 2 is a top plan view of the same.

' in Figures?) and 10 of the drawing.4

Extending from the posts 3 is an integral'l Figure -3 is atransverse vertical section through the truck. i Y n' 'Y Figure @is a lside elevation of the arch bar-sand a journallbox supporting bar.

Figure 5 nis aside `elevationl of the center frame, parts being inv'section.

Figure 46 is, atopf plan view of the same.`

Figure Tis an end elevation of Figures 5 and 6. H y

Figure 8 is a detail sectional view Ion the line A-A, Figure 5. f

Figure 9 is a detail sectional View on the lineB-.B,Figure 5'.

Figure 10 is a `section on the line C-C, Figure 5. y

Figure llis a top p1@ View df thekey Wedge. i

Figure l2 is a. side elevation of the` same. Figure 13 is an end elevation of the same.

The reference lnumeral `1 designates the wheels'of the truck nal box 2. f

The'center frame or member of'my improved sideftruck frame comprises a subjournalled in the jourstantial U shape member, the vertical elements of which constitute posts 3 vconnected n by the' bottom member, or element 4. The bottom .member of the U shaped frame is provided in its under-facev with a groovey 5 while the upper endsofthe posts 3 are provided'with grooves constituting -seats 6the side walls'of said seatsbeing provided with under `cut slideways 7 in which akey 8 is' p adapted to move. This key 8,v as will be seen from Figures 11, 12 and 13, has inclined f side portions 9 of substantially wedge shape which are adapted'to enter the -grooves `or seats 6 on'the top of the posts 3 and become' non locked therein.' As will be seen from IFig-M ure :12, the key end to the other. i,

Extending in line `with. the seats 6v are brackets 10, which bracketsare arranged on a ldownwardly inclined angle With respect to the seats 6, and are vprovided with a rivet 8v is wedge yshapefromk oneA opening 11, .the bracketbeing, asfaras its eectivey surface is concerned, of the same width as the seat 6; The cross sectional con-l iiguration of the posts 3 are :fully illustrated lug, or casting 12, having the open jawil3 in the sidewalls yof which" are lformed 'an yelongated slot 14 in whichthe brake head 15 is sustained, said elongated slots permitting forward and backward movement of the brakehead and 'brake beam to accommodate the movementV of .these parts incident to the' It will,

release and application of brakes. of course,lbe understood that the rivet 16 suspends the brake head inthe slots 14`of the bracket 12.

17 is the top arch bar and 18 is the bottom arch bar. The top arch bar is mounted in the seats 6 on the upper ends of the posts 3 of, the center .frame yand is secured inwsaid seats vtirmly by driving the keys .8 into -said seatsover the archbar with the side wedge like edgesv ofk the keys inftlie groovesi7 inthe .side walls: of theseat 6, and when said key is driven to proper position the key and the top .archbar are rigidly secured to the U` shape frame yby means of the rivet -19 1as shown in several views. -The outer ends of H the top .iarch'bar are each'provided with `four riveting openings as shown -1n the drawings.

iTlie bottom arch/.barm18 is seated in `the i' groove 5 in the bottom connecting member 4 of `the U shape frame, as clearly shown in the several views particularly' Figure '3. 20 is a journal box tie strapr which, at its central portion, is secured to the bottom inember4-of theU shapedf'rame by lmeans of the rivets 21, said rivets'. passing through the journal box tie strap, the -lower arch bar 18 and the bottom Vmember l4 of the Ufshape `frame, as clearly shown inFigure 1. The outer ends of Jthese journal box tie straps are turned upward as vat `22, which .turned portion constitutes a stop.

'The outer` ends of thelower. arch bars 18 i are provided with stops23 against which the outer ends of the upper arch bars 17 abut, which stop providesa` resistance against the outward movement ofthe ends ofthe top arch bar 1'7 underthe load brought upon the top arch bar at the top of the vposts 3 ofthe center frame.y f Y The top and bottom arch barsare secured together at their outer end portions byy rivets 24 while the journal box 2 is secured to Vthese g combined ends of the upper and lower arch bars by means of the rivets 25 and to the `journalbox tie rod by means of the rivets 26,

the rivets 25 and 26 being in vertical alignment with each other, and the. journal box at its lower end having a basevflange 27 which abuts the stop 22 on the tie rodA 20.

The U shape frames are .provided at 'their i lower ends vand extending from the bottom j Y member 4 with a bracket 27 terminatingin a forked end 28. 29 is a side frame tie bar preferably of channel shapehavingriveted to each end a plate 30, which plate is pivotally mountedin the forked end 28 onthe rivet 31 `whereby the two side frames are connected by a pivoted connection to provide flexibility for the truck to adjust itself to position, or curves in the track, making yits movement more .free and easy in curves than could be had if the side frames were rigidlyconnected as was heretofore the prac-v tice.V Such' flexibility reduces grinding-0f the wheel flange against the rail,vprovides against friction, ythereby reducing train re.

sistance, track wear and wheel flange Wear. It will be observed that by reason of the fact thatr the toplarch` bar `is vsecured to the top of the posts by rivets 19, the `Uvshaped frame is held from spreading from a Afixed position under all service stresses. i Y

32 are wear `platessecure'dvtothe inner face of theposgts 3 for thetruckbolster 33 and on bottom member 4is'arraiiged a fioor for the truckbolster `springs to rest upon,

Sfl'

said floor having upwardly projecting flanges 35 for holding the springs in position.

The ends of the bolsters aremounted upon rollers -or balls 36, seats 37 .beingformed in the bolster and seats 38 being yformed in the bearing plate 39 for said bearings. c

'A safety loop 40'is provided tofit around the brake' beam 41 :and the bottom ,brake lever connecting rod42 to prevent the bottom brake lever connecting rod from `falling down accidentally and engaging.thetracks,

or cross ties, inthe eventv of the bottom connectingrod becoming disengaged from .the brake lever '43.* c Y position, shown in Figure 3,-islocked inthe closed position :shown bybending the end 44 upward. after it passesjthrough ,the eye45 wherebythe loop is securely locked in closed c j i y rlhi's safety loop '40, after being placed in positionV against accidental openingunder all v service conditions, and V,at the Sametime the Y redet-.2A is wfreeto adapt itself to all. service,

conditions without imposing any strain on the loop '40,. i

It will be noted that in removing the Vjoui`- nal box it is unnecessary to disturb the yrivets ,l

vof the ltop y. and Abet-` 24 connectingthe ends tomarch bars.

VVhatIclaim-is: j 1. In Va truck side 'frame f an integral `U shaped center member, the vertical Vmembers of which constitutecolumnrposts adaptedto Y receive the truck bolster between them,fa seat in the top of'each Vpostv adapted "to receivethe top arch bar Vof the truck, ,andv a key yway slot in the inner side face ofthe lwalls of said seat.

2. In a truck side frame' ,an integralU` shaped center member, the vertical members In a truck side frame, a U shaped cen i ter member, the vertical elements of which constitute posts adapted to receive the truck bolster between them, a seat in-the top of' each post, and a bracket extending from each post and in line with said seats, said seats f and brackets adapted to receive the top arch bar ofthe truck.

4. In a car truck side frame, an integral U shaped member, the vertical members vof l.which constitute column posts adapted to receive the truck bolster between them, a seat in the top of each post adapted to receive y the top bar of said frame and a key way slot in the inner face of the walls of said seat, and

vkeys adapted to enter the sai-d seat and keyways, whereby the load placed in the ,U shaped center may be carried on the keys adapted to enter the said'seat and keyways.v

5. In a car truck side frame an integral U shaped center member with a circular bearing on the underside for the bottom arch bar to seat upon, the vertical members of which constitute column posts, a top arch bar seat on the upper ends of said posts, a bracket extending from the outer side of the top arch bar, and for securing to the top` arch bar to prevent outward movement of the vertical members fromthe side thrust of the truck bolster. f

6. A truck side frame, including an integral center U shape member adapted to receivethe truck bolster, the vertical members of the U shape frame constituting posts, a. t

seat on the topof each post to receive the top arch bar of the truck, key ways in the inner face of the side walls of said seat, brackets extending from said posts and constituting extensions of said seats, an arcuatev seat on the bottom face of the said member toreceive the lower arch bar of the frame, a bracket extending-outwardly from the inner face of the said member adapted to receive a tie rod, and lugs extending from the sides of said posts adapted to support brake shoes, all being ,cast integrally.

7. In a truck side frame having a U shaped center member, the vertical members of which constitute column posts to receive the truck bolster,between`them, a seat in the top of each post adapted to receive the top arch bar of the truck, and a key way slot in the inner side face of the walls of saidvseat, and a key adapted to enter said seat key way, and with a projecting jaw onthe inside of the ,bottoml portion of the U shaped center member, providing pivoted connection means for a tie between the two U shaped center members.

In testimony whereof I aix my signature.y

posts and constituting a prolongation of said n top arch bar seat to fit the underside of the y JOHN JQ TATUM. y 

